What are the technical specifications of the ZTE True Wireless Stereo Bluetooth Earphones?
The earphones use Bluetooth version 5.0, have a battery capacity of 43 mAh per earphone, and offer approximately 3.7 hours of music playtime and 3.7 hours of talk time. The charging case has a 500 mAh battery capacity, and the frequency range is 20 Hz to 20 KHz.
From the official Zte True Wireless Stereo Bluetooth Earphones manual, page 1
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